Hi, It looks like you might have a problem with your brain extraction. I would check that first. All the best, Mark On 8 Jan 2014, at 23:36, Catherine Tang <[log in to unmask]> wrote: > Dear All, > > I recently encountered a problem with my mean_FA map after TBSS. I digged around a little and found that some of my individual FA maps are problematic. For example, the brain is often cut off some parts toward the back of the brain. I wondered if this is due to the problem of the original data? > > I attached my mean_FA map, as well as one individual FA after DTIFIT. > > Hope someone could suggest on how to solve this problem. > > Thanks in advance, > Catherine > <dti.jpg><dti2.jpg>